More fixes for failures on the Windows bot

pkg/analyzer/test/source/test_all.dart

Index: pkg/analyzer/test/source/test_all.dart
diff --git a/pkg/analyzer/test/source/test_all.dart b/pkg/analyzer/test/source/test_all.dart
index 8530b7b49bae6c0fa4846d98942817c21d5ac8c5..6930bce039e8232f5ec3b8617a7b410279426dbb 100644
--- a/pkg/analyzer/test/source/test_all.dart
+++ b/pkg/analyzer/test/source/test_all.dart
@@ -6,16 +6,16 @@ library test.source;
 
 import 'package:unittest/unittest.dart';
 
+import '../utils.dart';
 import 'analysis_options_provider_test.dart' as analysis_options_provider_test;
 import 'package_map_provider_test.dart' as package_map_provider_test;
 import 'package_map_resolver_test.dart' as package_map_resolver_test;
 import 'path_filter_test.dart' as path_filter_test;
 import 'sdk_ext_test.dart' as sdk_ext_test;
 
-
 /// Utility for manually running all tests.
 main() {
-  groupSep = ' | ';
+  initializeTestEnvironment();
   group('source', () {
     analysis_options_provider_test.main();
     package_map_provider_test.main();